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i have a ?. im putting my ka24de s14 back into my s14 its a 95. i want to know if i can pass smog with some header i have. i believe they are obdx headers they have the egr value connectors and so if i install before i drop it in will it pass smog, or would it be better to just put on the regular exhaust manifold and pass smog and then change it?
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